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import time
from locust import HttpUser, task, between
from locust import LoadTestShape
import json
from math import sin, pi

class ProfileLoad(LoadTestShape):
    '''
    This load profile starts at 0 and steps up by step_users
    increments every tick, up to target_users.  After reaching
    target_user level, load will stay at target_user level
    until time_limit is reached.
    '''

    target_users   = 1000
    step_users     = 50      # ramp users each step
    time_limit     = 3600   # seconds

    def tick(self):
        num_steps = self.target_users/self.step_users
        run_time = round(self.get_run_time())

        if run_time < self.time_limit:
            if num_steps < run_time:
                user_count = num_steps * self.step_users
            else:
                user_count = self.target_users
            return (user_count,self.step_users)
        else:
            return None

class TritonUser(HttpUser):
    wait_time = between(0.2, 0.2)

    @task()
    def bert(self):
        response = self.client.post(self.url1, data=json.dumps(self.data))
    
    def on_start(self):
        with open('bert_request.json') as f:
            self.data = json.load(f)

        self.url1 = '{}/v2/models/{}/infer'.format(
            self.environment.host,
            'bert_large')

